High severity · published Jan 26, 2021
CVE-2020-23776
A SSRF vulnerability exists in Winmail 6.5 in app.php in the key parameter when HTTPS is on
7.5
CVSS
0.8%
EPSS
No
On KEV
Description
A SSRF vulnerability exists in Winmail 6.5 in app.php in the key parameter when HTTPS is on. An attacker can use this vulnerability to cause the server to send a request to a specific URL. An attacker can modify the request header 'HOST' value to cause the server to send the request.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WI
Winmail · Winmail Project
6.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-23776
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-23776
Exploit
https://github.com/zhonghaozhao/winmail/issues/3
More from Winmail
6.1
CVE-2020-23774
A reflected XSS vulnerability exists in tohtml/convert.php of Winmail 6.5, which can cause JavaScript code to be executed